1. Volume 46, Issue 1, Pages 95-96 (July 1964)
Left Azygos Lobe 
MATTHEW B. LESSER, M.D. 
Diseases of the Chest 
Volume 46, Issue 1, Pages (July 1964)
DOI: /chest
Copyright © 1964 The American College of Chest Physicians Terms and Conditions

2. FIGURE 1
Routine chest roentgenogram disclosed a sharply defined septum extending downward from the left apex.
Diseases of the Chest  , 95-96DOI: ( /chest )
Copyright © 1964 The American College of Chest Physicians Terms and Conditions

3. FIGURE 2
Tomogram cut 10 cm. from the posterior chest wall. The septum is clearly seen terminating medially as a triangular expansion (trigonum parietale).
Diseases of the Chest  , 95-96DOI: ( /chest )
Copyright © 1964 The American College of Chest Physicians Terms and Conditions